root (mathematics)

This article is about the zeroes of a function, which should not be confused with the value at zero. You may also want information on the Nth roots of numbers instead. In mathematics, a root (or a zero) of a complex-valued function  is a member of the domain of such that vanishes at , that is, In other words, a "root" of a function is a value for that produces a result of zero ("0"). For example, consider the function defined by the following formula: This function has a root at 3 because 0.If the function is mapping from real numbers to real numbers, its zeros are the points where its graph meets the x-axis. In this situation, a root can be called an x-intercept.
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